Book Maths Puzzle Percentage

HOW MANY GRAMS OF PURE SALT MUST BE ADDED TO 40 GRAMS OF A 20% SALT SOLUTION TO MAKE A SOLUTION THAT IS 36% SALT?

Read Solution (Total 1)

10 gms

(8+x)/(40+x) = 36/100
x=10 gms
10 years agoHelpfull: Yes(0) No(1)

Book Other Question

A sporting-goods manufacter has spent $1000.00 researching a new product. it will cost them $4.50 to manufacture the item that they will sell for $12.00. How many items must they sell to bearck even? The new perking lot has spaces for 450 cars. the ratio of spaces for full-sized cars to compact cars is 11 to 4. How many spaces are for full-sized cars? How many spaces are for compact cars?